Home / 315,278.72-473,132.28-128,324.24

Finding the Fourth Proportional to 315,278.72, 473,132.28 and 128,324.24

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Solution

The fourth proportional to 315,278.72, 473,132.28 and 128,324.24 is: 192,573.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,278.72 : 473,132.28 = 128,324.24 : x
  2. Step 2: Convert to fraction form
    315,278.72/473,132.28 = 128,324.24/x
  3. Step 3: Cross multiply
    315,278.72x = 473,132.28 × 128,324.24
  4. Step 4: Simplify right side
    315,278.72x = 60,714,340,250.47
  5. Step 5: Solve for x
    x = 60,714,340,250.47/315,278.72
  6. Step 6: Final answer
    x = 192,573.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.